def fib(n):
    a,b = 0,1
    while a < n:
        print(a , end=' ')
        a,b=b,a+b
    print(a,b)
def fib2(n):
    result = []
    a , b = 0,1
    while a < n:
        result.append(a)
        a,b = b,a+b
    return result
